UWORLD NCLEX-RN PRACTICE TEST 2
QUESTIONS AND ANSWERS 2026
1. A client with chronic heart failure is prescribed digoxin. Which of the following assessment
findings would indicate potential digoxin toxicity?
A. A heart rate of 88 beats per minute
B. Increased urinary output
C. Visual disturbances such as yellow-green halos
D. Serum potassium level of 4.5 mEq/L
Answer: C
Conceptual Explanation: Visual disturbances like yellow-green halos, along with nausea
and bradycardia, are classic signs of digoxin toxicity.
2. The nurse is caring for a client with a suspected pulmonary embolism. Which diagnostic
test is considered the gold standard for definitive diagnosis?
A. Chest X-ray
B. Computed Tomography Pulmonary Angiogram (CTPA)
C. D-dimer assay
,D. Arterial Blood Gas (ABG)
Answer: B
Conceptual Explanation: While D-dimer is a screening tool, CTPA is the gold standard for
diagnosing pulmonary embolism.
3. A client is admitted with Diabetic Ketoacidosis (DKA). Which of the following initial nursing
actions is the priority?
A. Initiating rapid fluid resuscitation with normal saline
B. Starting a continuous insulin infusion
C. Administering intravenous potassium
D. Obtaining a fingerstick glucose every 30 minutes
Answer: A
Conceptual Explanation: In DKA, the immediate priority is addressing severe dehydration
through fluid resuscitation before insulin or electrolyte management.
4. A nurse is monitoring a client receiving a blood transfusion. The client reports chills, low
back pain, and a temperature of 101.5 F. What is the nurse’s first action?
A. Stop the transfusion immediately
B. Notify the healthcare provider
C. Administer prescribed acetaminophen
D. Slow the rate of infusion
, Answer: A
Conceptual Explanation: These symptoms suggest an acute hemolytic reaction. The nurse
must stop the transfusion immediately to prevent further damage.
5. A patient is diagnosed with Pheochromocytoma. Which vital sign is most critical for the
nurse to monitor?
A. Respiratory rate
B. Blood pressure
C. Oxygen saturation
D. Temperature
Answer: B
Conceptual Explanation: Pheochromocytoma involves a tumor of the adrenal medulla
that secretes catecholamines, leading to severe hypertension.
6. The nurse is evaluating a client with suspected Lithium toxicity. Which serum lithium level
would confirm this suspicion?
A. 1.8 mEq/L
B. 1.1 mEq/L
C. 0.8 mEq/L
D. 0.4 mEq/L
Answer: A
QUESTIONS AND ANSWERS 2026
1. A client with chronic heart failure is prescribed digoxin. Which of the following assessment
findings would indicate potential digoxin toxicity?
A. A heart rate of 88 beats per minute
B. Increased urinary output
C. Visual disturbances such as yellow-green halos
D. Serum potassium level of 4.5 mEq/L
Answer: C
Conceptual Explanation: Visual disturbances like yellow-green halos, along with nausea
and bradycardia, are classic signs of digoxin toxicity.
2. The nurse is caring for a client with a suspected pulmonary embolism. Which diagnostic
test is considered the gold standard for definitive diagnosis?
A. Chest X-ray
B. Computed Tomography Pulmonary Angiogram (CTPA)
C. D-dimer assay
,D. Arterial Blood Gas (ABG)
Answer: B
Conceptual Explanation: While D-dimer is a screening tool, CTPA is the gold standard for
diagnosing pulmonary embolism.
3. A client is admitted with Diabetic Ketoacidosis (DKA). Which of the following initial nursing
actions is the priority?
A. Initiating rapid fluid resuscitation with normal saline
B. Starting a continuous insulin infusion
C. Administering intravenous potassium
D. Obtaining a fingerstick glucose every 30 minutes
Answer: A
Conceptual Explanation: In DKA, the immediate priority is addressing severe dehydration
through fluid resuscitation before insulin or electrolyte management.
4. A nurse is monitoring a client receiving a blood transfusion. The client reports chills, low
back pain, and a temperature of 101.5 F. What is the nurse’s first action?
A. Stop the transfusion immediately
B. Notify the healthcare provider
C. Administer prescribed acetaminophen
D. Slow the rate of infusion
, Answer: A
Conceptual Explanation: These symptoms suggest an acute hemolytic reaction. The nurse
must stop the transfusion immediately to prevent further damage.
5. A patient is diagnosed with Pheochromocytoma. Which vital sign is most critical for the
nurse to monitor?
A. Respiratory rate
B. Blood pressure
C. Oxygen saturation
D. Temperature
Answer: B
Conceptual Explanation: Pheochromocytoma involves a tumor of the adrenal medulla
that secretes catecholamines, leading to severe hypertension.
6. The nurse is evaluating a client with suspected Lithium toxicity. Which serum lithium level
would confirm this suspicion?
A. 1.8 mEq/L
B. 1.1 mEq/L
C. 0.8 mEq/L
D. 0.4 mEq/L
Answer: A
